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1.重庆医科大学生物医学工程学院、超声医学工程国家重点实验室,重庆 400016
2.重庆医科大学附属第一医院放射科,重庆 400016
张 珂,Email:1369258416@qq.com,研究方向:磁共振成像。
吕发金,Email:fajinlv@163.com。
收稿:2023-11-21,
修回:2024-04-29,
录用:2024-05-13,
纸质出版:2025-09-28
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张珂,唐明梅,郁斌,等.应用体外模型对阴道腔内线圈高清成像的磁共振可行性研究[J].重庆医科大学学报,2025,50(9):1290-1296.
Zhang Ke,Tang Mingmei,Yu Bin,et al.Feasibility of an ,in vitro phantom in high-resolution magnetic resonance imaging of endovaginal coil[J].Journal of Chongqing Medical University,2025,50(9):1290-1296.
张珂,唐明梅,郁斌,等.应用体外模型对阴道腔内线圈高清成像的磁共振可行性研究[J].重庆医科大学学报,2025,50(9):1290-1296. DOI: 10.13406/j.cnki.cyxb.003716.
Zhang Ke,Tang Mingmei,Yu Bin,et al.Feasibility of an ,in vitro phantom in high-resolution magnetic resonance imaging of endovaginal coil[J].Journal of Chongqing Medical University,2025,50(9):1290-1296. DOI: 10.13406/j.cnki.cyxb.003716.
目的
2
为未来阴道腔内线圈磁共振(magnetic resonance Imaging,MRI)体内成像提供参数指导,探索阴道腔内线圈技术的成像潜质。
方法
2
应用阴道腔内线圈对包含3种空间分辨率模块的体外模型进行T2 快速自旋回波(turbo spin echo,TSE)序列成像,改变主要成像参数。对不同成像参数下的图像测量信号计算信号噪声比(signal to noise ratio,SNR)、对比噪声比(contrast to noise ratio,CNR)和对比度(contrast,C),再分别划定区间进行成像质量评分,以及对体模的3种分辨率模块的显示情况进行结构显示评分,利用非参数检验比较组间的统计学差异。
结果
2
当主要成像参数为层厚2 mm、层间距0.2 mm、激励次数4、矩阵384×384、FOV 52 mm×52 mm、TE 74 ms、带宽180 Hz/Pixel、加速因子18,此时采集空间分辨率为0.14 mm×0.14 mm×2.00 mm,重建分辨率为0.07 mm×0.07 mm×2.00 mm,该参数下图像质量良好,三规格分辨率均可清晰显示,并且扫描时间临床可接受。层厚、层间距、激励次数、FOV和加速因子的成像质量评分每小组的组间差异均有统计学意义(
P
<
0.05);矩阵、TE和带宽的成像质量评分每小组的
P
值分别为0.521、0.502和0.566,组间差异均无统计学意义(
P
>
0.05)。所有参数的结构显示评分每小组的组间差异均有统计学意义(
P
<
0.05)。
结论
2
本实验所得参数可为未来阴道腔内线圈在人体中的应用提供指导,表现了该设备具有极高的成像潜质,阴道腔内线圈在未来临床应用中有分辨微小病灶的潜力。
Objective
2
To provide guidance on parameters for future endovaginal coil magnetic resonance imaging (MRI)
in vivo
,and to investigate the imaging potential of the endovaginal coil technique.
Methods
2
The endovaginal coil was used to perform T2-weighted turbo spin echo sequence imaging on a phantom containing three spatial resolution modules,with variations in key imaging parameters. Signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR),and contrast (C) were calculated for images under different imaging parameters,and image quality was assessed based on scores within specified intervals. Structural display scores were determined for the three resolution modules of the phantom,and the non-parametric tests were used for statistical comparison between groups.
Results
2
Under the main imaging parameters of a slice thickness of 2 mm,a slice gap of 0.2 mm,4 times of excitation repetition,a matrix size of 384×384,an FOV of 52 mm×52 mm,a TE of 74 ms,a bandwidth of 180 Hz/Pixel,and an acceleration factor of 18,good image q
uality was obtained with an acquired spatial resolution of 0.14 mm×0.14 mm×2.00 mm and a reconstructed resolution of 0.07 mm×0.07 mm×2.00 mm,and all three resolution modules were clearly visualized with a clinically acceptable imaging time. There were significant differences between groups in the imaging quality scores of slice thickness,slice gap,number of excitations,FOV,and acceleration factor(
P
<
0.05),while there were no significant differences in matrix,TE,and bandwidth between groups(
P
=0.521,0.502,and 0.566). There were significant differences in the structural display scores for all parameters between groups(
P
<
0.05).
Conclusion
2
The parameters obtained in this experiment can guide the future application of endovaginal coils in the human body,demonstrating the extremely high imaging potential of this technique,and endovaginal coil has the potential of identifying small lesions in future clinical practice.
Perkins RB , Guido RS , Castle PE , et al . Erratum:2019 ASCCP risk-based management consensus guidelines for abnormal cervical cancer screening tests and cancer precursors [J ] . J Low Genit Tract Dis , 2021 , 25 ( 4 ): 330 - 331 .
国家癌症中心 , 国家肿瘤质控中心宫颈癌质控专家委员会 . 中国宫颈癌规范诊疗质量控制指标(2022版) [J ] . 中华肿瘤杂志 , 2022 , 44 ( 7 ): 615 - 622 .
National Cancer Center,National Quality Control Center for Tumor,Expert Committee on Cervical Cancer Quality Control . Quality control index for standardized diagnosis and treatment of cervical cancer in China (2022 edition) [J ] . Chin J Oncol , 2022 , 44 ( 7 ): 615 - 622 .
He FJ , Zu SL , Chen X , et al . Preoperative magnetic resonance imaging criteria for predicting lymph node metastasis in patients with stage IB1-IIA2 cervical cancer [J ] . Cancer Med , 2021 , 10 ( 16 ): 5429 - 5436 .
Mao LJ , Zhang XL , Chen TT , et al . High-resolution reduced field-of-view diffusion-weighted magnetic resonance imaging in the diagnosis of cervical cancer [J ] . Quant Imaging Med Surg , 2023 , 13 ( 6 ): 3464 - 3476 .
Zhang ZG , Zhang CY , Xiao L , et al . Diagnosis of early cervical cancer with a multimodal magnetic resonance image under the artificial intelligence algorithm [J ] . Contrast Media Mol Imaging , 2022 , 2022 : 6495309 .
彭传勇 , 徐启兰 , 周 瑾 , 等 . 多参数MRI在宫颈癌早期诊断及临床分期中的应用价值 [J ] . 实用放射学杂志 , 2021 , 37 ( 5 ): 826 - 829 .
Peng CY , Xu QL , Zhou J , et al . Value of multi-parametric MRI in early diagnosis and clinical staging of cervical carcinoma [J ] . J Pract Radiol , 2021 , 37 ( 5 ): 826 - 829 .
廖俊杰 , 王乐富 , 刘永志 , 等 . 磁共振平扫联合扩散加权成像对宫颈癌术前分期的诊断价值临床研究 [J ] . 中国CT和MRI杂志 , 2021 , 7 ( 5 ): 86 - 88 .
Liao JJ , Wang LF , Liu YZ , et al . Clinical study of diagnostic value of magnetic resonance imaging plain scan combined with diffusion-weighted imaging in the preoperative staging of cervical cancer [J ] . Chin J CT MRI , 2021 , 7 ( 5 ): 86 - 88 .
Gopalan K , Maravilla J , Mendelsohn J , et al . Vacuum formed coils for MRI [J ] . Magn Reson Med , 2023 , 89 ( 4 ): 1684 - 1696 .
Kaniewska M , Deininger-Czermak E , Getzmann JM , et al . Application of deep learning-based image reconstruction in MR imaging of the shoulder joint to improve image quality and reduce scan time [J ] . Eur Radiol , 2023 , 33 ( 3 ): 1513 - 1525 .
Fellner C , Müller W , Georgi J , et al . A high-resolution phantom for MRI [J ] . Magn Reson Imaging , 2001 , 19 ( 6 ): 899 - 904 .
Stupic KF , Ainslie M , Boss MA , et al . A standard system phantom for magnetic resonance imaging [J ] . Magn Reson Med , 2021 , 86 ( 3 ): 1194 - 1211 .
Langer JE , Oliver ER , Lev-Toaff AS , et al . Imaging of the female pelvis through the life cycle [J ] . Radiographics , 2012 , 32 ( 6 ): 1575 - 1597 .
Tan IL , Stoker J , Laméris JS . Magnetic resonance imaging of the female pelvic floor and urethra:body coil versus endovaginal coil [J ] . Magn Reson Mater Phys Biol Med , 1997 , 5 ( 1 ): 59 - 63 .
Downey K , Attygalle AD , Morgan VA , et al . Comparison of optimised endovaginal vs external array coil T2-weighted and diffusion-weighted imaging techniques for detecting suspected early stage(IA/IB1) uterine cervical cancer [J ] . Eur Radiol , 2016 , 26 ( 4 ): 941 - 950 .
Downey K , Shepherd JH , Attygalle AD , et al . Preoperative imaging in patients undergoing trachelectomy for cervical cancer:validation of a combined T2- and diffusion-weighted endovaginal MRI technique at 3.0 T [J ] . Gynecol Oncol , 2014 , 133 ( 2 ): 326 - 332 .
Charles-Edwards E , Morgan V , Attygalle AD , et al . Endovaginal magnetic resonance imaging of stage 1A/1B cervical cancer with A T2- and diffusion-weighted magnetic resonance technique:effect of lesion size and previous cone biopsy on tumor detectability [J ] . Gynecol Oncol , 2011 , 120 ( 3 ): 368 - 373 .
Downey K , Riches SF , Morgan VA , et al . Relationship between imaging biomarkers of stage I cervical cancer and poor-prognosis histologic features:quantitative histogram analysis of diffusion-weighted MR images [J ] . AJR Am J Roentgenol , 2013 , 200 ( 2 ): 314 - 320 .
Downey K , Jafar M , Attygalle AD , et al . Influencing surgical management in patients with carcinoma of the cervix using a T2- and ZOOM-diffusion-weighted endovaginal MRI technique [J ] . Br J Cancer , 2013 , 109 ( 3 ): 615 - 622 .
Wormald BW , Doran SJ , Ind TE , et al . Radiomic features of cervical cancer on T2-and diffusion-weighted MRI:prognostic value in low-volume tumors suitable for trachelectomy [J ] . Gynecol Oncol , 2020 , 156 ( 1 ): 107 - 114 .
Wormald B , Rodriguez-Manzano J , Moser N , et al . Loop-mediated isothermal amplification assay for detecting tumor markers and human papillomavirus:accuracy and supplemental diagnostic value to endovaginal MRI in cervical cancer [J ] . Front Oncol , 2021 , 11 : 747614 .
DeSouza NM , Scoones D , Krausz T , et al . High-resolution MR imaging of stage I cervical neoplasia with a dedicated transvaginal coil:MR features and correlation of imaging and pathologic findings [J ] . AJR Am J Roentgenol , 1996 , 166 ( 3 ): 553 - 559 .
Palesi F , Nigri A , Gianeri R , et al . MRI data quality assessment for the RIN - Neuroimaging Network using the ACR phantoms [J ] . Phys Med , 2022 , 104 : 93 - 100 .
邝丽娜 . MRI多功能质控体模研究 [D ] . 天津 : 天津大学 , 2019 .
Kuang LN . Study on MRI multifunctional quality control phantom [D ] . Tianjin : Tianjin University , 2019 .
俞及 , 倪成 , 朱红毅 . 0482-2022 Y T 医用磁共振成像设备主要图像质量参数的测定 [M ] . 北京 : 中国标准出版社 , 2022 .
Yu J , Ni C , Zhu HY . 0482-2022 Y T . Magnetic resonance equipment for medical imaging-Part 1 :Determination of essential image quality par[M ] . Beijing : Standards Press of China ,2022.
井 赛 , 罗二平 , 申广浩 , 等 . 一种MRI临床质控体模的设计构想 [J ] . 医疗卫生装备 , 2017 , 38 ( 5 ): 4 - 8 .
Jing S , Luo EP , Shen GH , et al . Design of test phantom for MRI clinical quality control [J ] . Chin Med Equip J , 2017 , 38 ( 5 ): 4 - 8 .
牟 灿 . 超声凝胶阴道填充后MRI在早期宫颈癌分期中的价值研究 [D ] . 重庆 : 重庆医科大学 , 2021 .
Mou C . Value of MRI after vaginal filling with ultrasonic gel in staging of early cervical cancer [D ] . Chongqing : Chongqing Medical University , 2021 .
Fellner F , Fellner C , Held P , et al . Comparison of spin-echo MR pulse sequences for imaging of the brain [J ] . AJNR Am J Neuroradiol , 1997 , 18 ( 9 ): 1617 - 1625 .
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